This was confirmed by Luton Town, who had a 20 per cent sell on clause when Brentford signed Gray in the summer of 2014 and it is likely there is a similar clause in the deal that saw James Tarkowski join Gray at Turf Moor.

A Hatters statement in August 2015 read: “Should Andre contribute to Burnley’s success, resulting in a successful Premier League spell then we will also benefit further - to the tune of up to £700,000.”

The windfall will add some extra funds to the Bees, who have one of the smallest budgets in the division.